//
// Initialize the database to the number of accounts, branches,
// history records, and tellers given to the constructor.
//
public void populate() {
Database dbp = null;
int err;
int balance, idnum;
int end_anum, end_bnum, end_tnum;
int start_anum, start_bnum, start_tnum;
int h_nelem;
idnum = BEGID;
balance = 500000;
h_nelem = accounts;
try {
DatabaseConfig config = new DatabaseConfig();
config.setType(DatabaseType.HASH);
config.setHashNumElements(h_nelem);
config.setAllowCreate(true);
dbp = dbenv.openDatabase(null, "account", null, config);
} catch (Exception e1) {
// can be DatabaseException or FileNotFoundException
errExit(e1, "Open of account file failed");
}
start_anum = idnum;
populateTable(dbp, idnum, balance, h_nelem, "account");
idnum += h_nelem;
end_anum = idnum - 1;
try {
dbp.close();
} catch (DatabaseException e2) {
errExit(e2, "Account file close failed");
}
if (verbose)
System.out.println(
"Populated accounts: " + String.valueOf(start_anum) + " - " + String.valueOf(end_anum));
//
// Since the number of branches is very small, we want to use very
// small pages and only 1 key per page. This is the poor-man's way
// of getting key locking instead of page locking.
//
h_nelem = (int) branches;
try {
DatabaseConfig config = new DatabaseConfig();
config.setType(DatabaseType.HASH);
config.setHashNumElements(h_nelem);
config.setHashFillFactor(1);
config.setPageSize(512);
config.setAllowCreate(true);
dbp = dbenv.openDatabase(null, "branch", null, config);
} catch (Exception e3) {
// can be DatabaseException or FileNotFoundException
errExit(e3, "Branch file create failed");
}
start_bnum = idnum;
populateTable(dbp, idnum, balance, h_nelem, "branch");
idnum += h_nelem;
end_bnum = idnum - 1;
try {
dbp.close();
} catch (DatabaseException dbe4) {
errExit(dbe4, "Close of branch file failed");
}
if (verbose)
System.out.println(
"Populated branches: " + String.valueOf(start_bnum) + " - " + String.valueOf(end_bnum));
//
// In the case of tellers, we also want small pages, but we'll let
// the fill factor dynamically adjust itself.
//
h_nelem = (int) tellers;
try {
DatabaseConfig config = new DatabaseConfig();
config.setType(DatabaseType.HASH);
config.setHashNumElements(h_nelem);
config.setHashFillFactor(0);
config.setPageSize(512);
config.setAllowCreate(true);
dbp = dbenv.openDatabase(null, "teller", null, config);
} catch (Exception e5) {
// can be DatabaseException or FileNotFoundException
errExit(e5, "Teller file create failed");
}
start_tnum = idnum;
populateTable(dbp, idnum, balance, h_nelem, "teller");
idnum += h_nelem;
end_tnum = idnum - 1;
try {
dbp.close();
} catch (DatabaseException e6) {
errExit(e6, "Close of teller file failed");
}
if (verbose)
System.out.println(
"Populated tellers: " + String.valueOf(start_tnum) + " - " + String.valueOf(end_tnum));
try {
DatabaseConfig config = new DatabaseConfig();
config.setType(DatabaseType.RECNO);
config.setRecordLength(HISTORY_LEN);
config.setAllowCreate(true);
dbp = dbenv.openDatabase(null, "history", null, config);
} catch (Exception e7) {
// can be DatabaseException or FileNotFoundException
errExit(e7, "Create of history file failed");
}
populateHistory(dbp);
try {
dbp.close();
} catch (DatabaseException e8) {
errExit(e8, "Close of history file failed");
}
}
